Paper fastener



March 5, 1929. R. H. gHAR'proN 1,704,121

PAPER FASTENER.

Filed Aug. 15, 1927 72% 180x112 Cmrzlo're sheet;

scale, taken through the connected Patented Mar. 5, 1929.

sen srArEs ATENT' 0mm- ROY CHARLTON, OF BELMONT, MASSACHUSETTS,ASSIGN'OR, TOFELING EQUII IVIENTBUREAU, INCORPORATED, OF BOSTON,.MASSACH'USETTS, A CORPURATIGN OF MASSACHUSETTS. v

Miran Fasrnnnn.

Application filed August 15, 1927. Serial No. 212,859.

novel and improved features of construc tion hereinafter described andparticularly pointed out in the appended claims, by

means of Which the bound paper may conveniently be removed from thebackersheet and retained paper sheets may also be removedfrom thefastener Without detaching the fastener from the backer sheet. Anotherobject resides in the improved manner of reinforcing the hacker sheetand the base member of the fastener, whereby said base member and thehacker sheet are strength ened against bending stresses and the'paperssecured thereon are held flatwise under all usual conditions. A furtherfeature ofthe invention isthe provision of a base member and a Washermember similar in size and shape, so that said members may be stampedfrom a single blank and maybe shipped as a unit to be separated by theuser when desired. 1

A recommended embodin'ient of theinvention is illustrated in theaccompanying drawings, in Which:

Fig. 1' is a composite view of a three piece fastener containing the"aforesaid improvements, the base and'washer elements be ing integrallyconnected for shipment and shown in plan view, and the separatereinforcingmember being illustrated in perspective View;

l? 2 is a transverse section to enlarged elements on the line 22 of Fig.1 i

' Fig. 3 is an enlarged longitudinal section of the fastener assembledto secure a plural' ity of and I c l H i Fig. dis a section on line 4 -4of'Fig, 1.

The fastener preferably comprises a relatively long and narrow plate'orbase memher t of sheet metal, a second sheet metal plate or Washermember 5, and narrow, flat reinforcing strip 6 "which may be formedpaper sheets upon a backeror cover;

from the, same sheet metal stock 3 as the other members, or may besomewhat thicker if desired. It is recommended that the base 4; and theWasher 5 have substantially the same external dimensions, in order thatthe parts may be economically stamped in a single operation fromthefsame metal blank,

and it also suggested that these elements be formed as a unit, asindicated in Fig.1, .so that they may be shipped as a single piece tothe user. A longitudinal slit 7, terminat ing distant from the end ofthe connected members, may be provided between the bars and the Washerto facilitate the separation thereof for use. i p

"l hebaseis provided with a pair of elon gate biIlCllIlgll'lQlDbQl'S ortongues 8, prefers ably struck from the body of the, base in thestamping Peration in such I manner that theymay be bentupwardly of thebody per tion from their respective integral connections therewith near.the ends of thebase member; The base 9 of each tongue is spacedsuiliciently from the respective end of the base to permit the provisionof an intermediate aperture 10 adjacent each endfof the plate.Longitudinal stiffening ribs 11 may be provided to render the basesubstan tially inflexible under ordinary conditions of use. c v

The washer 5 is provided with tWo apertures12, near its ends, spacedapart substantially the same distance as the distance between the bases9 of the base tongues 8', and may also have stiffening ribs 13 along itsside margins. Preferably the connections at 14 between. the unitarybase-Washerv element of Fig. 1 are scored or weakened in the stampingoperation to permita' clean break when the partsare bent for separation.

shortintegral prongs 15 bent upwardly at each end, the length of thestripbetween the V v 7 The reinforcing strip (i has relatively base. Assuggested above, this strip may be stiffer than the base member, for itis not necessary that the prongs 15 be as flexible as the base tongues8, Wlll be apparent.

In use, the based is placed upon the inner face offthe backer'or coversheet 16 and is secured thereupon by the reinforcing strip I 6 which isapplied'to the opposite surface of Cir the pointed ends of the tonguesor by inserting them through previously prep red hole. the ends of hetongues are inse theapertures 12 of the washer the wae r is pressed downupon the top sheet of the papers; and the tongue ends are bent ou wardlyor inwardly (preferably the latter) and clenched tiatwise upon thewasher. The paper sheets are then secured upon the base and upon thehacker, and readily be removed from the fastener without detaching thebase member from the hacker sheet.

For some purposes of this invention washer 5 may be omitted withoutsubstan tially impairing the efiiciency of the faster and in such casethe tongue ends are her 1 flat upon the top sheet of the a mbled papers.Other details of co )2 may be varied for particular uses w houtdeparting from the spirit of the invention as defined in the appendedclaims. For example, the tongues 8 may be bent at their bases asindicated at 18 in'Fig. 4 to facilitate their initial bending intoupright position.

A fastener constructed aforesaid be economically manufactured (the be."H d washer members may be formed complete in a single stampingoperatlon); may be conveniently packaged for shipment the reinforcingstrip may be temporarily fastened to the base by bending its prongsthrough the base apertures to prevent loss) and is easy to assemble anddiuable in use. its the fastening between the base member and the backersheet is independent of the tongues 8, the material of the sheetis notsubjec bending or tearing when papers are a I erred to or removed fromthe binding tongues, and the material is not weakened or bent bysuchoperations by reason of the reinforcement G." The papers may. be removedwithout separating the base from the backer, or L8 boundshcets mayreadily be removed from the backer by detach? the reinforcing strippFurthermore, the difficulty of piercing the relatively weak and flexibletongues sheet of stout material 8 through a baci and the in ury whichthe tongues subject by such at s are avoided by util zingthe reiufor rip(3 with its shorter and stronger pron s f piercing the mate rial.Likewise it i treasury to perforate the backing before app" lug thefastener thereto as is customary with nrior fasten thus the extraoperation of first punching the backing with a perforator is eliminatedby this new fastener. Indeed the only acts required to apply this newfastener is to lay the backing over the strip 6 with a slight pressureto indicate by indentations the points where the prongs 15 contact withthe backing, then press the base l against the backing with the openings12 in registry with the prongs 15 to force the backing and base over theprongs, and then bending the prongs 15 over the front of the base 4C.

I claim:

1. it paper fastener comprising a base adapted to be secured to a hackerShQGtfl-Ild provided w'th a pair of tongues adapted to be i ertedthroitigh the papersto be fastened and to be folded thereupon to securesaid or the hack r sheet opposite to saidibaseand means for securing thereinforcing member to the base.

e said papcrs upon the backerg sheet, a 1

8. A paper fastener. comprising a basew adapted to be securcdto a backersheet: and provider with a pair of tongues adapted to be insertedthrough the papers to be fastened and to be folded thereupon to securesaid papers-upon the backer sheet, and a reinforcing strip applied tothebacker sheet on the face opposite said, base, said strip having endprongs extendingthroughthe backer sheet and bent upon the basedetachablyto secure the base upon the backer sheet.

ri paper fastener. comprising a 5 base adapted to be secured to a backersheet and having a pair of integral tongues adapted to be insertedthrough the papers to befastened :nd to be folded thereuponto securesaidI apers upon the backer sheet, said base havan aperture adjacent each ofits ends,

a reinforcing strip appliedto the opposite face of the backer sheet,said strip having end prongs passing through the hacker sheet andthrough said apertures and being, bent downwardly upon the outer face ofthe base, detachably to secure said base to the hacker sheet;

5. A paper fastener cou'iprisingan elonte base adap i to be secured to.a backer pair of integral tongues sheet and havi a struck u p from itsbody portion and adapted through the papers to be fast red and to befolded thereupon to secure p pers uponthe backer sheet, said base hayinin aperture adjacent each end, and a reiniorcing strip appliedito theop.-

to be inserted posite face of the backer sheet, said strip having endprongs passing through the backer sheet and through said apertures andbeing bent downwardly upon the outer face struck up from its bodyportion and adapted to be inserted through the papers to be fastened,and a Washer of substantially the same length as the base and havingapertures near its ends through which said tongues are passed to befolded thereupon, said base and said washer being formed as a unit froma metal blank, whereby the two elements may be shippedas a, singlepiece, the connection between said elements being readily severable whendesired.

Signed by me at Boston, Mass, this 12th 2 day of August, 1927. p

r ROY H. CHARLTON.

